All, With the help of Dave AH6OD, this issue has been resolved. Thanks to all who shared their knowledge, and a special thanks to Dave for spending over an hour-and-a-half with me online today getting this fixed. 73, Mike WM4B From: App_rpt-users [mailto:app_rpt-users-bounces@lists.allstarlink.org] On Behalf Of Mike Besemer Sent: Thursday, June 28, 2018 8:00 PM To: Users of Asterisk app_rpt Subject: [App_rpt-users] iaxrpt Making progress on my node. After several false starts I finally got the node connected and am able to connect via iaxrpt from my Android devices if I use my EXTERNAL IP address. I cannot connect from Android or Windows using my INTERAL IP address. I followed the guide at hamvoip.com and have double checked everything. The port is open for both UDP and TCP connections. The firewall seems ok. It has to be something obvious. What did I miss? Mike WM4B